The background color of the panel.
This property is a shortcut for setting the Background property to a SolidColor brush. Supports being set using a float4 notation, or hexadecimal values(f.ex #FF00AA)

When true the panel is in a frozen state. This means:
- layout of the children is blocked
- child invalidation does not invalidate this panel
- the visual drawing is captured once and used for all future drawing

The children of the visual.
All nodes placed inside the visual in UX markup are assigned to this list.
The order of Visuals this list determines the order of layout. The Z-order
of the children is by default equal to this order, but can be manipulated
separately using methods like BringToFront and SendToBack.

Returns whether this visual is currently visible.
Will return false if any of the ancestor visuals are hidden or collapsed.
This property can not be used to check whether a visual is hidden because it is occluded by
another visual, or is outside the view but otherwise visible.

Finds the first node with a given name that satisfies the given acceptor.
The serach algorithm works as follows: Nodes in the subtree are matched first, then
it matches the nodes in the subtrees ofthe ancestor nodes by turn all the way to the
root. If no matching node is found, the function returns null.